About Us

International B2B data, insight and sales development specialists.

We’re the difference makers you need to refine your sales and marketing efforts.

Learn more

GCL in numbers

Over 40 Countries Operated In
14 Languages Spoken
Over 300 Years Management Experience
35 Years in Operation

Our Story

Established in 1990 – GCL has been going strong for decades, delivering B2B data, insight, telemarketing and sales development results to international organisations, who use our services time and time again (there’s a good reason for our longevity!).

We started life as a specialist B2B telemarketing agency. Over time, our success allowed us to grow to include several divisions, including data services, market research and sales development.

What’s our secret to success?

We operate a unique phone-first approach, meaning that we believe in opening direct conversations with key decision makers in your target markets, creating the perfect blend of data, insight and outreach.

This helps you to find the right people in the right companies. We’ll take the time to understand what’s keeping them awake at night, before professionally engaging and driving prospects through the sales funnel.

Our philosophy allows us to develop deeper insights and relationships with your audience, dramatically increasing odds of conversion.

What we do

Our Team

What Makes GCL Unique? 

There are several good reasons why our clients stick with us for years…

Over Three Decades of Expertise


Our curated team of industry experts have an incredible breadth of experience. We’ll take the time to get under the skin of your businesses, learning what makes your customers/clients tick. Using both quantitative and qualitative data from our research, we’re able to create highly specific telemarketing strategies, designed specifically to meet your growth needs.

Unique Approach


While the world of marketing moves at one-hundred miles per hour, there’s sometimes nothing more powerful than a conversation with another human. We help you better understand and engage with your market, driving sales opportunities and demonstrable ROI by having truly meaningful conversations, bolstering your brand in the eyes of your prospects.

Drive Your Business Forward


At the end of the day, we understand that you come to us for growth. We’ll establish realistic KPIs and unique goals when we first meet, ensuring that you see a tangible ROI from working with us. As resolute professionals, we pride ourselves on our ability to deliver time and time again. Trust your growth to our specialist team.

Our Growth Services

We get you in front of your target accounts. Our ABM services help identify the key decision makers you should be speaking to. We’ll help you better understand the market, engaging decision makers with laser-precise telemarketing that endears them to your brand.

Identify, target and engage the marketplace. Our omnichannel SDR service is designed to manage your entire inbound and outbound prospect journey, ensuring a smooth transition into your sales pipeline, dramatically boosting conversion rates and establishing a strong relationship from the outset.

Phone-first, comprehensive B2B telemarketing, tailored specifically to your requirements and backed by decades of experience. Our specialists are here to support – it’s our job to ensure your sales team are provided with regular sales-ready opportunities.

No sales or marketing strategy can function without appropriate, well-targeted data. We have access to the broadest international data sets in the world. By understanding your business and needs, we deliver highly specific, clean data that is ready to support your sales & marketing programme.

We provide unique insights into your markets that are not available anywhere else, helping you better understand your market, its needs and how best to communicate with it. Insights that allow you to stay one step ahead of the competition.